The poll also found that 45 percent of the respondents said the top issue was the economy and 25 percent said it was education.

SurveyUSA called 940 adults in the city of Portland between Feb. 23 and Feb. 26. Out of that number, 555 people were determined by SurveyUSA to be registered to vote and likely to cast a ballot in the primary.

If no one gets more than 50 percent of the vote in May, a runoff will be held in November between the top two primary finishers.

The candidates are running to replace current mayor, Sam Adams, who said last summer he wouldn't seek a second term.

Hales and Smith have both been interviewed on KATU's political show "Your Voice, Your Vote." Brady will be interviewed this week for Sunday's 9 a.m. show.